Type:Fuel Valve Petcock

Outer Diameter: 14cm/5

and then install it directly

Fit for Yamaha SR250TH - 1981 SR250 - Exciter II Street

4JH-81410-00

27.5 Inch Mountain Bikes 21 Speed Men's MTB Stage Lighting Single Units Type:Fuel Valve PetcockFeatures: 1: Spoke Magnesium wheels: lightweight and more durable. 2: Mens womens bikes. 3: Fashionable and advanced Suspension. 4: Disc brakes Mechanical. 5: The bicycle has been adjusted for shifting and braking before leaving the factory, and the disc brakes are automatically adapted. If the brakes are not tight, you can appropriately adjust the tension of the brake cable of the disc brake. 6: Easy to install, please consult customer service if you